Nice upsell while you're waiting in line.

It feels good to receive something that was promised to you. Good businesses know how to do that to all their customers. And Josh, the business prof from Personal MBA, delivered as promised. Thanks Josh, Kelsey & Lela!

As I was passing an optical store, a sign at the entrance caught my eye. 

Seems like a great way to collect visitor information and systematize the process of serving customers.

I wonder how well it worked for them and how they used this data.